A novel pyrene-2-(pyridin-2-ylmethylsulfanyl) ethylamine based turn-on dual sensor for Al3+: experimental and computational studies

被引：10
作者：
Bhowmick, Rahul [1 ]
Dolai, Malay [1 ]
Alam, Rabiul [1 ]
Mistri, Tarun [1 ]
Katarkar, Atul [2 ]
Chaudhuri, Keya [2 ]
Ali, Mahammad [1 ]
机构：
[1] Jadavpur Univ, Dept Chem, Kolkata 700032, India
[2] CSIR Indian Inst Chem Biol, Mol & Human Genet Div, Kolkata 700032, India
来源：
RSC ADVANCES | 2014年 / 4卷 / 79期
关键词：
FLUORESCENT CHEMOSENSOR; FLUOROMETRIC-DETERMINATION; SPECTROSCOPIC PROPERTIES; EXCITATION-ENERGIES; EXCIMER FORMATION; ALUMINUM IONS; PROBE; POLYMER; APPROXIMATION; DERIVATIVES;
D O I：
10.1039/c4ra06018k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new pyrene based highly sensitive and selective Al3+ sensor, pyrene-2-(pyridin-2-ylmethylsulfanyl)-ethylamine (PP), was found to exhibit a turn-on fluorescence enhancement (FE) as high as 7.4 fold with K-d(2.55 +/- 0.10) x 10(-4) M and n = 1. This probe binds reversibly with Al3+ in the presence of H(2)EDTA(2-), both under intra-and exctracellular conditions. LOD determined by 3s methods was found to be 15 nM while LOQ = 52.8 nM. The tentative coordination environment in the Al3+-PP complex was delineated by DFT calculations both on the free ligand and complex. The TDDFT calculations reveal spectral features comparable to the experimental ones.
引用
收藏
页码：41784 / 41792
页数：9
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